In addition
to the operation strictly according
to the standard quality control system,
each YITONG staff focuses on every process
details, try best to provide "
free faulty " products for our
customers.

Quality control
flow -

YITONG put all production procedure
into the quality control system, including
external partners' production. So the
quality can be controlled efficiently
on each procedure from the beginning
of selecting raw material.

On the internal production, we drew
up a deliberate plan for the inspection
of products. The first one product of
each procedure must be checked (making
the full inspection on the first one
product produced in each procedure),
and then the production go on if the
quality passed. During the production
we make the timely sample survey on
the quality (for example, quality inspector
four times each day, operator at any
time). After finishing each procedure,
we will make quality inspection according
to the procedure requirements, and then
we can step into the next. Before assembling,
each component should be made an overall
check. The finished products can be
put in storage only on the condition
that they are qualified. On the key
items (for instance, bore, outer diameter,
clearance, Kea and so on) the rate of
inspection is required 100%.

Before products leaving the factory,
YITONG Inspection Department still make
a comprehensive check on them to ensure
that they can meet customers' requirements.

Filed all inspection data are ready
for tracing back.

Others of quality control -

YITONG quality controllers are all
trained professionally, passed the examination
then they can be allowed to work. These
persons will be re-trained and examined
regularly to improve their abilities.

In 2004, YITONG products twice passed
the inspection by American laboratory
of Napoleon Engineering Services.

In September 2003, we possess ISO 9001:
2000 certification.

In 1997, YITONG products got the quality
acceptance from China National Bearings
Laboratory.